Influence of deformed cavity field and atomic dipole interaction on the quantum correlations of two-qubit system

Abstract

The possibility of generating of some quantum correlations of the entangled or separable initial two-qubit system interacting with a deformed cavity mode in the presence of dipole-dipole interaction is discussed. These quantum correlations are the coherence, non-separability and steering degrees which are quantifiers by using $$ l_1 $$ l 1 norm of coherence, Entanglement of Formation and Einstein–Podolsky–Rosen -steering. It is shown that maximizing or minimizing the quantum correlations depends on the initial setting states of the two-qubit system. To maximize the quantum correlations on the presence of deformation, one has to prepare the initial two-qubit system in an entangled state, setting large values of the coupling dipole and decreasing the effect of the deformation parameter.

Noise‐Based Damping of Chaotic Entanglement in Pulsed Driven Two‐Qubit System

“…This outcome aligns with the results in refs. [50, 51]. The concurrence behavior reveals that the entanglement initiates at its maximum value and exhibits periodic fluctuations over time, where the periodicity at $$ t=\frac{\pi }{n \omega }$$.…”

Depiction of an External Classical Field Effects on a Four-Level W-Configuration Atom Embedded in a Coherent Cavity Field

“…In other words, it is a measure of how well the system can maintain its quantum properties without being disturbed by external influences. Coherence has been studied extensively in recent years and has been found to be essential for many quantum systems, such as, nonlinear SU (1, 1) quantum states [18], two-qubit system interacting with a deformed cavity [19], two coupled quantum dot molecules [20] and accelerated systems [21,22].…”